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The role of neutrophils in triptolide-induced liver injury / 中国天然药物
Chinese Journal of Natural Medicines (English Ed.) ; (6): 653-664, 2018.
Article in English | WPRIM | ID: wpr-773574
ABSTRACT
Triptolide (TP) induces severe liver injury, but its hepatotoxicity mechanisms are still unclear. Inflammatory responses may be involved in the pathophysiology. Neutrophils are the first-line immune effectors for sterile and non-sterile inflammatory responses. Thus, the aim of the present study was to investigate the neutrophilic inflammatory response in TP-induced liver injury in C57BL/6 mice. Our results showed that neutrophils were recruited and accumulated in the liver, which was parallel to or slightly after the development of liver injury. Neutrophils induced release of myeloperoxidase and up-regulation of CD11b, which caused cytotoxicity and hepatocyte death. Hepatic expressions of CXL1, TNF-α, IL-6, and MCP1 were increased significantly to regulate neutrophils recruitment and activation. Up-regulation of toll like receptors 4 and 9 also facilitated neutrophils infiltration. Moreover, neutrophils depletion using an anti-Gr1 antibody showed mild protection against TP overdose. These results indicated that neutrophils accumulation might be the secondary response, not the cause of TP-induced liver injury. In conclusion, the inflammatory response including neutrophil infiltration may play a role in TP-induced hepatotoxicity, but may not be severe enough to cause additional liver injury.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Phenanthrenes / Drugs, Chinese Herbal / Chemistry / Interleukin-6 / Tumor Necrosis Factor-alpha / Chemokine CCL2 / Neutrophil Infiltration / Tripterygium / Intracellular Signaling Peptides and Proteins / Diterpenes Limits: Animals / Female / Humans Language: English Journal: Chinese Journal of Natural Medicines (English Ed.) Year: 2018 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Phenanthrenes / Drugs, Chinese Herbal / Chemistry / Interleukin-6 / Tumor Necrosis Factor-alpha / Chemokine CCL2 / Neutrophil Infiltration / Tripterygium / Intracellular Signaling Peptides and Proteins / Diterpenes Limits: Animals / Female / Humans Language: English Journal: Chinese Journal of Natural Medicines (English Ed.) Year: 2018 Type: Article